Gun lock



I Aug. '16, 1949. v D. J. GARRETSON 2,479,107

GUN LOCK Filed July 31, 1948 2/ INVENTOR. DQNALD J GARRE TSON PatentedAug. 16 1949 UN PATEN 'i 6F FHQE y LocK Donald J; Garretson,---Detroit,Mich.- Aprlieationuuly" 31, 1948; Serial No: 41;74'0

It is an object 'of my invention'to provide 'a'gun lockwh ichmayeasilybeapplied to look a firearm and which may beeasily and quicklyremoved by an" authorized person, when the use of the gun is desired:-

It is also an object of my invention to provide such a gun lock of asimpleandrugged construction which is reliable in'use. v}

It isa further object of my invention to provide such a g'un'lockwhichisa umtary-structure having no separatable parts which have to bebrought together for use and which could be separated and lost.

Another object of my invention is to provide such a gun lock which isinstallable and removable entirely from the muzzle end of the barrel ofthe gun.

My invention, however, will be more readily un-- derstood, andadditional objects and advantages thereof will become apparent, byreading the following specification in conjunction with the appendeddrawings, wherein:

Fig. 1 is a side elevational view showing a revolver with my gun lockinstalled to prevent unauthorized use, and the inner portion being showndotted;

Fig. 2 is a side elevational view showing the gun lock by itself,partially broken away and sectioned, and internal parts being shown bydotted lines;

Fig. 3 is an elevational view showing the outer end of the gun lock;

Fig. 4 is an enlarged fragmentary view showing the inner or locking endof the gun lock and the cooperative elements thereof, with dotted linesshowing the projected position of the locking members; and

Fig. 5 is an enlarged end elevational View of this inner end of the gunlock.

Referring more specifically to Figs. 1 and 2 of the drawings, I haveillustratively disclosed an embodiment of my invention, which comprisesan outer lock casing l i, which houses outer or manual lock means l3,and a tubular sheath [5 extending therefrom for insertion through themuzzle end of the barrel ll, of a firearm I9. Although the gun I 9 isshown as a conventional revolver, it will be understood that it could bean automatic pistol, single shot pistol, or other type of gun.

To hold the inserted lock sheath I5 in the bar- 4 Claims; (Cl. 4270) .2I rel-, as'shown'in Figs. 2, a and 5; the sheathis provided near itsinner or inserted end; with a pairof holes 21in aligned relation in the013130:- site sidewalls thereof 'for receiving the opposite ends of atransverse-lockingpm 2 3 disposedslid ablytherein.

This lockin pin ea iseasil and quicklyprojected'orretracted byrotatin'g'a locking rodfib extending the tubularsh'ea-th and which hasan'eceentric 27 rojecting from the inner end of the rod. The lock'pin-23' is providedwithan oval aperture a e-fer receiving thiseccentri-epin 21 ai'idby turning thelock rod fi'ffi 'throu'g'lf about onehali aturn; or 'iso 'degrees, the lock pin-is either retracted or projected,as more clearly shown in Figs. 4 and 5, where the projected position isrepresented in dotted lines.

The manual or outer lock means l3, housed in the outer lock casing H,may for example be a conventional tumbler cylinder which is unlocked androtated by a proper key 3| inserted therein, in a well known manner. Theinner end of the rotative lock cylinder I3 is attached to the outer endof the lock rod 25, as by welding, or in any suitable manner, and inthis manner the lock rod is rotated in either direction for projectingor retracting the lock pin, as desired. Other types of key, or evencombination locks, may be utilized, as will be understood.

The lock rod and its outer sheath are easily made in any suitable lengthin accordance with the length of the barrel of any firearm for which thegun lock is provided, as will be readily understood. The length of theseparts is so selected that the lock pin will be inserted in to a pointjust beyond the shoulder 33 of the enlarged counterbore comprising theshell chamber 35, shown dotted in Fig. 1. Any attempt to withdraw thedevice from the gun, without first properly unlooking it and retractingthe transverse lock pin, will cause this pin to engage and jam againstthis shoulder thereby preventing the withdrawal of the device from thegun barrel. The tubular sheath may be made of some soft metal, such asaluminum, or it may be coated with any suitable plastic composition orother material for protection of the inner surfaces of the gun barrel.

It is apparent that within the scope of my invention modifications anddiiTerent arrangements may be made other than herein disclosed, and thepresent disclosure is illustrative merely, the invention comprehendingvariations thereof.

What is claimed as the invention is:

1. A firearm lock comprising, a lock sheath of length suitable to beinserted into a gun barrel through the muzzle of the barrel, inner lockmeans adapted to be projected from the inner end of said sheath forlocking it into a gun barrel by engagement with the shoulder of thecartridge chamber of the gun barrel, a lock rod extending operatively insaid sheath for actuating said lock means, and manual lock means on theouter accessible end of said lock sheath for actuating said inner lockmeans to lock the device in a gun barrel or to release it therefrom.

2. In a firearm lock the combination of, a tubular sheath comprising aninner end and an outer end and adapted to be inserted into a gun barrelfrom the muzzle end thereof, manually operative lock means on the outerend of said sheath, inner lock means on the inner end of said sheath forlocking it in a gun barrel byengagement with the shoulder of thecartridge chamber of the gun barrel, and means extending through saidsheath for operating the inner lock means from the manual lock means forconveniently locking the sheath into a gun.

3. In combination in a firearm lock, a tubular sheath adapted to beinserted into a gun barrel'from the muzzle end and of a length such thatwhen so inserted the inner end will be passed in beyond the shoulder ofthe enlarged cartridge chamber in said barrel, inner lock meanson saidinner end of the sheath adapted for projection to engage such a shoulderto hold the device in a gun barrel or for retracting to permit removaltherefrom, manual lock means on the'outer end of said sheath forconvenient operation by an authorized person, and actuation meansconnecting operatively from said manual lock means through said tubularsheath to said inner lock means whereby said inner lock means isconveniently controllable from the external manual lock means.

4. A firearm lock comprising, a tubular sheath of a diameter suitable tobe inserted into the muzzle end of a gun barrel of a certain caliber andof a length such that when so inserted the inner end will be passed inbeyond the shoulder of the cartridge chamber of said barrel, a lock pinslidably disposed in the inner end of said sheath for projectionlaterally to engage said shoulder to hold the device in a gun barrel,manual lockmeans on the outer end of said sheath for convenientoperation by authorized persons, a rod extending rotatively through saidsheath for operative connection between said manual lock means and saidlock pin, the inner end of said rod being terminatedadjacent said pinand having a crank pin projectingeccentrically therefrom into operativeconnection with a recess in said pin for projecting or re.- tractingsaid lock pin in accordance with the operation of said manual lockmeans; s

- DONALD J. GARRETSON.

REFERENCES CITED The following references are of record in'the file ofthis patent:

UNITED STATES PATENTS f Number 7 Name Date 2,327,334 Parker Aug. 17,1943

